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- W1492630036 abstract "The distribution of regolith on asteroid surfaces has only recently been measured directly by in situ observations from spacecraft. To the surprise of many researchers, most of the classical predictions for the distribution of asteroid impact ejecta have not rung true, with regoliths appearing to be geologically active at small scales on asteroid surfaces. This indicates that significant insight into geological processes on asteroids may be inferred by detailed studies of the distribution of impact ejecta on asteroids. This chapter has been written to support these future investigations, by trying to identify and clarify all the important elements for such a study, to point to the recent history of such studies, and to indicate the current gaps in our understanding. The chapter begins with a discussion of the initial conditions of ejecta fields generated from impacts on the asteroid surface. Then the relevant physical laws and forces affecting asteroid ejecta, in orbit and on the surface, are reviewed and the basic dynamical equations of motion for ejecta are stated. Some general results and constraints on the solutions to these equations are given, and a classification scheme for ejecta trajectories is given. Finally, recent studies of asteroid ejecta are reviewed, showing the application of these techniques to asteroid science." @default.
- W1492630036 created "2016-06-24" @default.
- W1492630036 creator A5004339689 @default.
- W1492630036 creator A5021928700 @default.
- W1492630036 creator A5034949405 @default.
- W1492630036 date "2002-12-01" @default.
- W1492630036 modified "2023-10-02" @default.
- W1492630036 title "The Fate of Asteroid Ejecta" @default.
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